libchemistry-ring-perl - 0.21-1 main

Chemistry::Ring provides some basic methods for representing a ring. A ring
is a subclass of molecule, because it has atoms and bonds. Besides that, it
has some useful geometric methods for finding the centroid and the ring
plane, and methods for aromaticity detection.
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This module does not detect the rings by itself; for that, look at
Chemistry::Ring::Find.